The Blessed Buddha once said:I am a friend and helper to all,I am sympathetic to all living beings.
I develop a mind full of friendly goodwill.
I always delight in harmlessness!I gladden my mind, fill it with joy,and make it immovable and unshakable.I develop these divine states of mindnot cultivated by simple men.Theragāthā
648-9

I am a friend of the footless,I am a friend of the bipeds;
I am a friend of those with 4 feet,I am a friend of the many-footed.May not the footless harm me,
May not the bipeds harm me,May not those with 4 feet harm me, &
May not those with many feet harm me.AN
II 72

A friend, who always lends a hand,a friend both in sorrow and joy,a friend who offers good counsel,a friend who sympathizes too.
These are the four kinds of true friends:One who is wise, who have understood much,will always cherish and serve such friends,just as a mother tends
to her only child.
DN
III, 188

Among tigers, lions, leopards
and bears I lived in the jungle.
No one was frightened of me, nor did I fear anyone.Uplifted by such universal friendliness, I enjoyed the forest.Finding great solace in such sweetly silenced solitude…Suvanna-sama
Jataka 540

And how does a Bhikkhu abide with his mind imbued with friendlinessextending overall? Just as he would feel friendliness on seeing a dearly
favourite person, exactly so does he extend this same loving-kindness to
all beings in all eight directions, one by one, and as above so
also below.Abhidhamma
Pitaka: Appamañña-vibhanga

Bhikkhus, whatever kinds of worldly merit there are, all are not worthone sixteenth part of the release of mind by universal friendliness;in shining, glowing and beaming radiance, in invisible
yet shielding protection,such release of mind by universal friendliness far excels & surpasses them
all... Itivuttaka
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